Electrically-heated flat-iron.



1R: W. BMM. ELEGTRCALLX HEATED FLAT IRON.

PYLIGATIGH PLE? PR.30,1912.

921811@ oen. 1, 1912.

p? 3M 1g v piece (if porcelain 29? will turn, and whenit is inthe position shown by the full lines 1n Fig. 2, thefcorner ofv it will engage the an electrically heated -flat-iron in which as` spring contact 24b and bring it into4 Contact with the spring contact 23, forming a con nection between the contact 23 and 24. When the piecev of square porcelain isturned as shown by dotted lines in Fig. 2, the contact K vbetween the springs 24b and 23" will be ing leadihg through the sockets 32 and 33.v Thev broken. y i,

The current supply is led in through the hole 31 infthe top near 'the' back ofthe insulation part 11, and connects with the bindosts 26 and 28 by the wires 34 and 35 electric connections with the heating elements and-16 in the heater are as follows, The current will enter by' the wire 34 through the socket 32, to the'binding post 26,

from thencey through the spring contact 23 to the terminal 18, and from thence through the heating element 15. tothe terminal 19,

through the spring contact to the binding post'28, and from thence out through the wire 35. In this way of connecting the heating element, the heating element 15 will alone be heated, but when the square piece .of porcelain --29 is turned linto the position shown by the full lines in Fig. 2, the spring contacts 24b will engage the contact 23, and the electric connections will be as follows.

.In addition to the path of the current above described, the current will also pass from the binding post 26 to the spring contact 23,

from there through thespring contact 24",

" v24a and 24 to the terminal 17, and from thence through the heating element 16 to the -binding post 19 and out through the spring contact 25 and the wires 35. en tie connections are made in this way the :current will pass through both the heating elements 15 and 1'6. In order that the square piece ofporcelain 29 may be locked in place' against accidental `displacement, the contact24h is notched ate 36 so as to engage the cornerof/,th'esqiiarel 29.l The leading-in wires may be. secured' in any desired way. Inthe .drawings I have shown them as surrounded by a wirespring .37 to avoid accidentalbending or breaking, this wire spring being. supported inplce by a tube 38 whic is secured to the/handle. 20. Any usilal flexible connection canwbe used to carryjthe wires 34 and 35. In order to hold the heater in place against the face plate, I provide a spring 39 which is secured jto the body ortion 10 by the screw 40,a nd is bent as s own in Fig. -1 so as to contact with the upper surface of the heater 14, At the other end Iof the heater the spring contacts 23, 24 and 25hold the heater in close contact with the face-plate 12. In order'that the heater may be withdrawn if desired, I provide a lug 41which is secured to the end of the heater, and to a plate '42 necting with the heating elements.

which covers the opening to the iron and gives a finish to the rear end. s

It is apparent, therefore, that I provide the heater contacts with almost the entire surface of the face-plate, the surface of the iron will be uniformly and evenly heated, and one in which the amount of heat gen# crated in the heater can be very `easily regulated. AAs the material composing the heater is a good conductor of heat and a poor conductor ofelectricity even when hot, there will not only be an even distribution of heat, but there will be no short circuiting in the heating element. This arrangement insures a very quick heating ofthe iron, as the whole bottom surface of the heater is in actual contact with the bottom portion of the iron. V V

The heater itself is very tough and hard, so that even if the iron is put to very rough use there is no danger of the heater breaking and the heating elements cmbeddedin it being impianti.v

It is apparent that changes can be made in the construction of the iron, such as in the number of heating elements used, or the material of which the heater is made, with- 'out departing frointhe principle of my invention. A

As stated, the heater itself is composed of powdered carborundum held together with a binder and formed into the shape desired and dried, but I do not claim this composi tion as part of my invention.

I claim g- 1. A flat-iron having a chambered portion, a heaterlfitting within the chamber and in actual contact with the bottom thereoffthe heatei'- being composed of material which is a good conduct-oit of heat and a poor vconductor' of electricity when hot, heating elements in filament form contained within the heater, and electric connections for the heating elements.

` 2.' A flat-iron having a chambered portion, a heater tting within the chamber, heating .elements in lilainent form contained within the heater, a top portion of electric non-com ducting material secured to the chambered portion, and electric connections carried in the top portion and connecting with the'l heating 4elements in the heater.

3. A Hat-iron comprising a chambered body portion, a face-plate secured to the body portion, a heater supported between the faceeplate and the body portion andin contact with the faceplate, the heater being composed of material which is a good conductor of heat and a poor conductor of electricity when hot, heating elements in filament form'in the heater, a top portion vsecured to the body portion, and electric connections carriedI iithe top portion and.con-

4. A flat iron comprising a ohanibered body portion, a face plate secured to the body portion, a heater removably supported between the face plate and the body portion and in Contact with the entire inner surface of the face. plate, a plurality of heating elements in filament form embedded within the heater` a top portion of insulating material secured to the body portion, spring contacts supported in the top portion kand engaging the terminals of the heating elements, and means supported in the top portion for oonneeting one or more of the heating elements with the current supply.

5. An eiectric iliat-iron having a body portion with a ohanber near and paraliel with serving the purpose oit current connect-ors; n

and". for holding the heater in piacei anti suitable connections 'or the spring contacts.

RAYMQNE W'. BAKER.

Witnesses VARREN B. Hnfror-rmeom ARTHUR Gr. DANNELL. 

